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| Registros recuperados : 78 | |
| Registros recuperados : 78 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
15/05/2018 |
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Data da última atualização: |
05/02/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
OLIVEIRA, S. M. de; ALMEIDA, R. E. M. de; CIAMPITTI, I. A.; PIEROZAN JUNIOR, C.; LAGO, B. C.; TRIVELIN, P. C. O.; FAVARIN, J. L. |
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Afiliação: |
SILAS MACIEL DE OLIVEIRA, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; IGNACIO A. CIAMPITTI, KANSAS STATE UNIVERSITY; CLOVIS PIEROZAN JUNIOR, ESALQ; BRUNO COCCO LAGO, ESALQ; PAULO CESAR OCHEUZE TRIVELIN, CENA; JOSE LAERCIO FAVARIN, ESALQ. |
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Título: |
Understanding N timing in corn yield and fertilizer N recovery: an insight from an isotopic labeled-N determination. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
PLoS One, v. 13, n. 2, e0192776, Feb. 2018. |
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ISSN: |
1932-6203 |
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DOI: |
10.1371/journal.pone.0192776 |
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Idioma: |
Inglês |
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Conteúdo: |
Early fertilizer nitrogen (N) application on cover crops or their residues during the off-season is a practice adopted in Brazil subtropical conditions under no-tillage corn (Zea mays L.) systems. However, the effect of early N application on yield, plant N content, and N recovery efficiency (NRE) for corn is not yet well documented. Five fertilizer N timings in an oat-corn system were evaluated in two studies utilizing an isotopic-labeled N determination, 15N isotope. The N fertilization timings were: (i) oat tillering, (ii) 15 days before corn planting time, over the oat residues, (iii) at corn planting time, (iv) in-season at the three-leaf growth stage (V3), and (v) in-season split application at V3 and six-leaf (V6) growth stages. Based on the statistical analysis, the N fertilization timings were separated into three groups: 1) N-OATS, designated to N applied at oat; 2) N-PLANT, referred to pre-plant and planting N applications; and 3) N-CORN, designated to in-season corn N applications. Corn yield was not affected by the N fertilization timing. However, the N-CORN N fertilization timings enhanced NRE by 17% and 35% and final N recovery system (plant plus soil) by 16% and 24% all relative to N-OATS and N-PLANT groups, respectively. Overall, N-OATS resulted in the largest N derived from fertilizer (NDFF) amount in the deeper soil layer, in overall a delta of 10 kg N ha-1 relative to the rest of the groups. Notwithstanding corn yield was not affected, early N fertilization under subtropical conditions is not a viable option since NRE was diminished and the non-recovery N increased relative to the in-season N applications. MenosEarly fertilizer nitrogen (N) application on cover crops or their residues during the off-season is a practice adopted in Brazil subtropical conditions under no-tillage corn (Zea mays L.) systems. However, the effect of early N application on yield, plant N content, and N recovery efficiency (NRE) for corn is not yet well documented. Five fertilizer N timings in an oat-corn system were evaluated in two studies utilizing an isotopic-labeled N determination, 15N isotope. The N fertilization timings were: (i) oat tillering, (ii) 15 days before corn planting time, over the oat residues, (iii) at corn planting time, (iv) in-season at the three-leaf growth stage (V3), and (v) in-season split application at V3 and six-leaf (V6) growth stages. Based on the statistical analysis, the N fertilization timings were separated into three groups: 1) N-OATS, designated to N applied at oat; 2) N-PLANT, referred to pre-plant and planting N applications; and 3) N-CORN, designated to in-season corn N applications. Corn yield was not affected by the N fertilization timing. However, the N-CORN N fertilization timings enhanced NRE by 17% and 35% and final N recovery system (plant plus soil) by 16% and 24% all relative to N-OATS and N-PLANT groups, respectively. Overall, N-OATS resulted in the largest N derived from fertilizer (NDFF) amount in the deeper soil layer, in overall a delta of 10 kg N ha-1 relative to the rest of the groups. Notwithstanding corn yield was not affected, early N fertilizati... Mostrar Tudo |
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Thesagro: |
Fertilizante Nitrogenado; Milho; Planta de Cobertura; Plantio Direto; Zea Mays. |
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Thesaurus NAL: |
Corn; Cover crops; Nitrogen fertilizers; No-tillage. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/176845/1/CNPASA-2018-plosone.pdf
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Marc: |
LEADER 02608naa a2200325 a 4500
001 2091450
005 2019-02-05
008 2018 bl uuuu u00u1 u #d
022 $a1932-6203
024 7 $a10.1371/journal.pone.0192776$2DOI
100 1 $aOLIVEIRA, S. M. de
245 $aUnderstanding N timing in corn yield and fertilizer N recovery$ban insight from an isotopic labeled-N determination.$h[electronic resource]
260 $c2018
520 $aEarly fertilizer nitrogen (N) application on cover crops or their residues during the off-season is a practice adopted in Brazil subtropical conditions under no-tillage corn (Zea mays L.) systems. However, the effect of early N application on yield, plant N content, and N recovery efficiency (NRE) for corn is not yet well documented. Five fertilizer N timings in an oat-corn system were evaluated in two studies utilizing an isotopic-labeled N determination, 15N isotope. The N fertilization timings were: (i) oat tillering, (ii) 15 days before corn planting time, over the oat residues, (iii) at corn planting time, (iv) in-season at the three-leaf growth stage (V3), and (v) in-season split application at V3 and six-leaf (V6) growth stages. Based on the statistical analysis, the N fertilization timings were separated into three groups: 1) N-OATS, designated to N applied at oat; 2) N-PLANT, referred to pre-plant and planting N applications; and 3) N-CORN, designated to in-season corn N applications. Corn yield was not affected by the N fertilization timing. However, the N-CORN N fertilization timings enhanced NRE by 17% and 35% and final N recovery system (plant plus soil) by 16% and 24% all relative to N-OATS and N-PLANT groups, respectively. Overall, N-OATS resulted in the largest N derived from fertilizer (NDFF) amount in the deeper soil layer, in overall a delta of 10 kg N ha-1 relative to the rest of the groups. Notwithstanding corn yield was not affected, early N fertilization under subtropical conditions is not a viable option since NRE was diminished and the non-recovery N increased relative to the in-season N applications.
650 $aCorn
650 $aCover crops
650 $aNitrogen fertilizers
650 $aNo-tillage
650 $aFertilizante Nitrogenado
650 $aMilho
650 $aPlanta de Cobertura
650 $aPlantio Direto
650 $aZea Mays
700 1 $aALMEIDA, R. E. M. de
700 1 $aCIAMPITTI, I. A.
700 1 $aPIEROZAN JUNIOR, C.
700 1 $aLAGO, B. C.
700 1 $aTRIVELIN, P. C. O.
700 1 $aFAVARIN, J. L.
773 $tPLoS One$gv. 13, n. 2, e0192776, Feb. 2018.
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Embrapa Pesca e Aquicultura (CNPASA) |
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